Trim panel



March 31, 1936. J, A, BUMPUS EfAL TRIM PANEL 2 Sheets-Shet 1 Filed Dec. 29; 1952 INVENTOR;

J. Allen Bumpus a ll egbert r1 Wooola/Z W W I ATTORNEYS.

March 31, 1936. J. A, BUMPLYJS ET AL TRIM PANEL Filed Dec. 29, 1952' 2 Sheets-Sheet 2 c/ All 25 21 um us a figb ert 7Voodall ATTORNEYS.

Patented MQ-LBI, 1936 v V n d I I I I UNITED STATES PATENT Jesse AllenBumpusand Herbert J. Woodall, De-- troit, Mich, assignors to WoodallIndustrles Incorporated, Detroit, Mich, acorporation of- M n j. l 7' Application December 29, 1932, Serial No. 649,282 '3 10mins. (014154-541).

.Qur invention relates to improvements in trim {form panels. It is apparent, however; that other panels and to improvementsin the method of suitable foundation board material mi'ght'be emmanufaoturing such panels. 5 ployed. v f

It is particularly adaptable to interior trim We intend to apply the covering material di- -6 panels for automobile bodies and. is shown as rectly to the foundation board without the posi- 5 embodied in such a panel and an improved proctloning of packing or wa'ddingsuch-as has hitheress for manufacturing the same. to-been the common practice in this art. In the An object is to provide such apanel of three complete panel {structure there will then be a layers or laminations. The foundation layer is foundation of composition fibrous material indi- 10 a fibrous composition'panel-board material and catedas. to, an outer layer of coveringmaterial 1o preferably. one containing an asphaltum' content -l2 and an intervening 'middle layer H or lamina- .which is inherently resistantto the attack of tion' of asuitable'water'and cleaning fluid resistmoisture. The outer layerisalayer of upholstery ant' material which serves also the additional The interior or'intermediate layer is a layer of terial to' the foundation board. This intermematerial which constitutes'a barrier to the pasdiate layer isof sucha character that it extends sage of moisture or of cleaning fluid solution in areinforcement into the1cut edges of; the asthe same is commonly'used andalso serves the foundation layer. It is so applied that it is additional purpose of constituting an adhesive driven into the porosities of the cut edges of the to secure the finishing materialto the foundation foundation board soias to form a very complete 20 board. 1 barrier to prevent the passage of moisture at this A meritorious feature of the invention is that critical point. n n theprotecting intermediate layer is so applied This intermediate layer also serves to prevent that it is driven into the cut edges of the board any of the ordinary cleaning fluids'which are used so as to form within the porosities of the struc to clean the .outer covering material from 'pene- 25 ture of the board a complete barrier layer to the trating into the foundation board and producpassage of moisture thereinto. -It also forms on ingbleeding' of; the asphalt therefrom. It serves the edges, because of its method of application, this purpose in addition to serving the purpose a reinforced barrier layer. of; preventing seepageoi' moisture into the-board,

Other objects and meritorious characteristics particularly the cut edges,whi'chwould produce 30 of our improvement'will further appear from'the warping or buckling of the board and otherwise following-specification, appended claims, andacrendering it unsatisfactory for its purpose as a companyingdrawings, wherein panel foundation. j 1 1 v Fig. 1 is a diagrammatic layout of our improved In carrying out our improved process, difler- 5 process. a ent methods may be employed within limits, de- I Fig. 2 is a diagrammatic layout of a modified 5 per'iding upon the materials used. In Figure 1 form of our improved process. i of the drawings we have showndiagr'ammatical- Fig. 3 illustrates a step in the process. I Q ly a machine whereby apanel board I0 is passed 40 Figs. 4 and5 illustrates steps in the manufacthrougha 'pairof rollers l6 and I8. One of the ture of the completed article. rollers picks up from a vat 20 by roller 2l a 'suit- 40 Fig. 6 is a sectional view through the comable adhesive and protective coating compound pleted article. which is applied-to the oneisurface of the board The construction of our improved panel is ex as a coating 22. The coated surface of the board plained from the preferred method of its manuis then covered with a sheet of covering mate'- facture which is illustrated in the drawings. We rial 24 which has been cut to size and shape. 45

prefer to employ as a. foundation board a com- The board may then be passed along to an-. position fibrous material which contains a subother place in the line where the operator then stantial quantity of a colloidal asphalt binder applies under the force of suitable pressuremech- I which renders the material inherently resistant anism such as indicated at 26thisadhesive proto theattack of moisture. The treatment and tective compound to the cut edges of the board. process of manufacture provides that the outer This compound is 'applied'under pressure so that plane surfaces of this material are substantially it penetrates into the porosities of the edge strucmore resistant to the attack of .moisture than ture. It'alsocoats the adiacent portions of the V the cut edges which result from the cutting of covering material and the board onthe rear face the material into the proper size and shape to of the board. It thereby forms'a reinforcement 55 material such as woven'cloth or artificial leather. purpose of an adhesive to secure the'covering mai of the coating at the edge of the'board which overlies both surfaces of the board adjacent to j cult to fasten down and'in'the case of artificial the edge forcing itself in underneath the cloth at the edge of the board.

The covering material is then folded onto the back of the board as indicated at 28, This completes'the' covering ib! the board. It may then be delivered as desired. It will be seen that in the board resulting from this method of operation the covering material is adhesively secured throughout its entire expanse to the board by a coating which not only serves as an adhesive but serves as a protective coating' -to'thei penetration of, moisture either in the form-of water or cleaning fluid solutions and that the 'cutedgeportion' of the board "has a reinforcement'of' this bar-' rier therearound. a U

tory for this purpose andformean efiectiveseal and barrier to the seepage of the' moisture described and also form a peculiarlysecure adhesion between the covering material andL-the foundationiboard; H Y ii Certain types of covering; material :are diffileather, which is a material of-this character,

-I prefer to coat thesurface of the covering material as well as the surface of the board. In this case, emay coat theartiflcial leather surface by sprarig the latex adhesive compound thereon as at 25 in Fig.,4. Thisparticuiar step in the process is illustrated in the modified showing of Fig.2;v The boards may herebe put through v 35 the machin'e but the covering 'materialis spray fcoated as shown. These materials/are wthen juxtaposed and additional coatingis sprayed;.over the edge portionslof the board beingldriven into the porosities thereof and. the'covering material isfthen folded over on tothe back of theboard. It'has been found that in carrying out this process that it is .not necessary-that the covering material after being, sprayed 'with the'coating be'juxta'posed upon thecoatedisurface of the board .within any veryclose, time-limit This is .ofconsiderable importance inaproduction program. The coated covering material and the coated board maybe brought together at such time as is convenient and the adhesion which is obtained is a very secure one. i f i It is to be noted that in the present instance we have a complete panel structure which cornprises three laminations. There'is thetfoundation layer of the fibrous compositionmaterial ill whichcontains the binder described.- There is the outer layer I2 ,of covering material." There is the intermediate layer Hi which forms an ad.- hesive binder and in additionl'forms'a layer "of protective material completely encasing'ithat surface" of the foundation board which isengaged by the covering material. and particularly encasing cut edges of the board preventing ingress of moisture at this critical point.'

The entire panel assembly may then be subjected to'a stamping operation to provide suitable embossed designs thereon and for other purposes.

of the required size and shape to cover said surface of the board andto fold over the edges thereofon to'the'flback of the board, and coatin'g one surface'of said sheet with an adhesive latexcompoundgiapplying said sheet of'covering .material to the panel board bringing the coated V h a surfaces of the: two together, applying an adhe- We'have found that certain latex compounds I of a commercial character are highly satisfacmoisture and the cutedges of .which are substantially, more pervious'to moisture, coating one surface ofsaid-board with an adhesive latex companel--comprising\cutting to size and shape a fibrous composition panel .board, the plane surfaces of, which arewsubstantially impervious to 25,

pound; providing a sheet of covering material' of the required size and shape to cover said surface of the board and to fold over the' edges on to the back thereof and coating ione surfaceof saidsheetwith an adhesive latex' compound, ap-

plying said, sheet to the board bringing the coat- 1 ed. surfaces of the two together, applying an ad'- hesive latex compound under pressure :to the cut' edgesof; the board to be driven under pressure into the porosities of said out edges forming a waterproof-barrier thereover, and applying the same adhesive compound to the adjacent. portionsof the board-and the sheet of covering material and folding the sheet of covering material over said out edges and downupon the back of; the-board to adhere thereto.

3. That method of fabricating a covered trim panel comprising cutting to size and-shape a fibrous composition panel. board having cut edges which are relativelymore pervious to moisture than the, plain surfaces thereof, providing a layerof; fabric covering material of required size and shape to extend over. one surface of-the boardand to fold overthe edgesunto the back thereof, securing, said covering material to the surface of the board by a layer of moisture-proof adhesive compound, and applying moisture-proof adhesive compound under pressure to thecut edges of theipanel prior to thefoldingof said covering material over the edgesof. the panel so as to render the relatively pervious cut edges resistant to moisturepenetration.

JESSE AYLLEN tomes. .HERBERT J. WOODALL. 

